{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "1839512",
    "entityType": "User",
    "nonce": "0xc017f2973f854c00347700c6f85e2ef07a22f1fdf7945f15d07cef4a4601513e",
    "signature": "0xfab664754d39753e0e40053fc202694a468b898b8b828e89138bb957d8dd525a39762e77866f560cd29e388e7a3d7edb56b388ed4b825f3f81a6ca266a4514871c",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}